Serena and Venus Williams Had a Seriously Old-School Tennis Practice

Remember the early days of Serena Williams and Venus Williams when, before a match, the news would play old tapes of the duo's practice sessions with Papa Williams? And we'd freak out at their way-ahead-of-their-age talent? Or maybe you remember when the two tennis superstars completely reshaped the sport, winning, like, every tournament as singles and doubles players, giggling through it all like in the photo above?

Good times, right? That's why we were psyched to see this Instagram vid Serena posted over the weekend.